Pump.



J. P. NICHOLAS.

PUMP.

APPLICATION FILED H1LY8., 1914.

Patented b apt. 26, 1916.

5 SHEETSSHEET 2,

m sw,

wumflow J BN1 ch 01 as 6 Ho: n :1

a I g Z u 4 Mu W s x z W a w u wen Ho 3 m iii? E I! v. n n t 5% \v Aw lvaiiiififlsuam 9 A w 7 k gg m w L W a m o 1-. P. NKCHULAS.

*PUMP.

APPLICATION FILED JULY 8. 1914.

1 ,1 9 9,5 9 4 Patented Sept. 26, 1916.

s SHEETS-SHEET s. 131' .3.

8% van ioz HM wow I. P. NICHOLAS.

PUMP.

APPLICATION FILED JULY 8. 1-914.

Patented Sept. 26, 1916.

iHoznn I. P. NICHOLAS.

PUMP.

APPLICATION FILED JULY 8.. 1914.

1 1 99 ,5 94 Patented Sept. 26, 1916.

5 SHEETSSHEET 5.

awe/who; JR Nichol cos attomog 35 with or having to pass through the discharge JAMES P. NICHOLAS, OF STUETGART, ARKANSAS.

"rune.

Application filed July 8, 1914. Serial No. s4as1i To all whom it may concern:

Be it known that I, JAMES P. Nronoms, a citizen of the United States, residing at Stuttgart, in the county of Arkansas and State of Arkansas, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to improvements in centrifugal pumps, especially adapted for operating in deep pits or deep wells such as irrigation wells, the invention consisting in the construction, combination and arrangement of devices hereinafter described and claimed.

One object of my invention is to provide an' improved centrifugal pump of this kind in which the discharge pipes are free from obstruction and offer no internal resistance to the upward flow of water. v

Another object is to efi'ect improvements in the construction of the pump whereby the working parts may be readily kept lubricated under all conditions of operation and the lubricant may be readily suppliedor renewed while the pump is in operation.

Another object is to effect improvements in the construction of the pump whereby the parts of the same maybe readily assembled and disassembled to permit repairs to be readily made and afi'ord easy access to all of the parts.

Another object is to eifect improvements in the construction of the pump topermlt the lubricating means and the driving shaft to be raised and lowered without interfering head or the discharge pipes.

Another object is to effect improvements in the construction of the pump whereby the discharge piples are rendered entirely independent of t ings and whereby the driving shaft and the discharge pipes may be made of any required length.

In the accompanying drawings: Figure 1 is a side elevation of the upper portion of a centrifugal pit pump constructed in accordance with my invention. Fig. 2 1s avertical sectional view of the same on a plane at right angles to Fig. 1. F g. 3-1s partly an elevation and partly a vertical sectional view of the lower or intermediate portions of the same. Fig. a is a detail plan view of the cap of the casing in which the centrifugal pistons operate. Fig. 5 is a deta1l s1de elevation of the same. Fig. 6 is a similar view Specification ofLetters Patent.

e driving shaft and its bear- Patented Sept. 26, 1916.

at right angles to Fig. 5.-

7 is partly a plan of the head of the pump and partly a sectional v1ew of the same on the plane indicated by the hne aa of Fig. 2. Fig. 8 is a detail sectional view of the same on the plane indicated by the line bb of Fig. 7. 1g. 9 1s a horizontal sectional view on the plane indicated by the line 00 of Fig. 3.

For the purposes of this specification, the well or p1t casing in which the pump is arranged and operated is indicated at 1. A head 2 is arranged on the upper end of the casing 1 to close the latter. A casing 3 in which the centrifugal pistons 4c operate is arranged 1n the casing 1 at a suitable distance from the lower end thereof and the lower head 5 of the casing 3 has a central opening to which is connected the upper end of the intakepi e 6.

The vertical shaft gal pistons are attached and which serves'to rotate the said pistons has its upper end mounted in a bearing 8.in the upper side of a frame9 which is mounted on the head 2. A pair of vertically arranged discharge pipes 10 are at opposite sides .of and disconnected from the shaft 7, their lowerends to which the centrifuv communicating with the casing 3 and their upper ends discharging through the head 2.

These discharge pipes are made in separable sections and the shaft 7 isalso made in separable sections so l that the pump may be lengthened by the addition of the pipe and shaft sections to any extent required by the depth of the pit or well in which the pump is to operate.

The cap 11 of the casing 3 is formed with a central depending boss 12 at the lower end of which is an annular fiange13 whichis .arranged abovethe upper centrifugal piston 4. The said cap also has a tubular-portion 14 on its upper side centrally located and the said-cap is formed with curved outlets 15 which project from'its upper side, are centrifugally arranged with reference to the cap and each of which inclines in one direction, the intakes of these outlets being formed by vanes 16 which are formed with and connect the said cap and the flange 13. The outlets 15 are formed at their'upper ends with circular flanges 17 which project outwardly therefrom and to which the flanges 18 at the lower ends of. the lower most discharge pipe sections 10 are secured by means of bolts 19, suitable packings being interposed at the joints between said.

outlets 15 and said discharge pipe sections. The bore of the tubular portion 14 of the cap also extends through the cap, the flange 13 and the boss 12 and receives a bushing 20 of brass or other suitable metal or material and through which bushing the shaft 7 passes, the said bushing forming a bearing for said shaft and being provided at its upper end with a flange 21 which rests on the upper end of the tubular portion 14 of the cap.

The shaft 7 comprises an upper section 22, a lower section 23 and any suitable number of intermediate sections 24 according to the required length of the shaft. The opposing ends of the shaft sections are screwthreaded and are engaged by the threads of coupling sleeves 25. Hence, the shaft sections are detachably connected together. The upper shaft section 22 passes through and revolves in a bushing 26 in a bearing 27 with which the lower plate 28 of the frame 9 is provided, and said upper shaft section also has a ball bearing 30 which is mounted in a cup 31 formed on the bottom plate 28. A driving pulley 32 is secured on the upper shaft section by a key 33 and screw 34. The lower end of the hub of the pulley bears on a washer 34 which is above the ball bearing and a collar 35 is screwed to the upper shaft section as at 36, bears on the upper end of the hub of the pulley and is held in place by a set screw 37.

Blocks 38 are arranged between the discharge pipe sections and are provided with central bores through which the driving shaft extends. These blocks are located at points substantially midway between the jointed ends of the discharge pipe sections, are provided in their ends with recesses which receive and fit the opposing sides of the discharge pipe sections and are also provided at their corners with lugs 39. U- shaped bolts 40 engage the outer sides of the discharge pipe sections and aresecured to the lugs 39 by nuts 41 and bars 42, the arms of the U-bolts passing through the said lugs. Any other suitable means may be employed for securing the clamping or U-bolts to the blocks. These blocks are secured together in pairs by the bars 42. Any other suitable means may be employed for connecting the blocks together within the scope of my invention. A lubricating casing 43 incloses the major portion of the shaft 7. This casing comprises an upper tubular member 44 which connects the boss 27 of the plate 28 with the upper clamping block 38, and lower member 4.5 which connects the lower clamping block 38 with the tubular portion 14 of the cap 13 and inter: mediate members 46, one or more of which connect the intermediate clamping blocks 38 together in pairs. The upper member 44 of the lubricating casing has a detachable messes;

upper section 47 secured thereto by a screw coupling sleeve 48. The upper end of the section 47 is provided with a collar 49 screwed thereto and provided with an annular flange 50, this flange being engaged by the flange 51 of a coupling sleeve 52 which is screwed to the lower end of the boss or bearing 27.

The lower end of the lower member 4125 is secured to the tubular member 14 of the cap 13 by a coupling sleeve 53 the upper end of said member 45 being screwed to a nipple 54: formed at the lower end of the lower clamping block 38. Each clamping block has a portion of its bore enlarged for the reception of a Babbitt or other suitable bearing sleeve 55 in which the shaft 7 revolves so that the said clamping blocks also form bearings for the said shaft.

By the provision of the sectional discharge pipes, the clamps including the blocks and the U-bolts which secure the discharge pipes together and by the provision of bearings for the shaft in the said blocks, the shaft is kept in properalinement and the construction is rendered so rigid and strong as to be practically free from vibration. Moreover, the shaft and discharge pipes form continuousconnections from the top of the pump down to the casing 3 and the discharge pipes are rendered entirely independent of and are totally disconnected from the driving shaft and the bearings of the shaft are effectually prevented from being injured by sand or grit.

The lower end of the upper blocks 38 and the upper end of the lower block 38 are, respectively, provided with suitable packing boxes 56. Intermediate blocks, where they are employed in pumps that operate in deep wells or pits will be connected together in pairs by intermediate members of the lubricating casing and will be provided on their opposing sides with threaded nipples for engagement by said intermediate members of the casing and at their outer ends with packing boxes.

A lubricating pipe 58 is connected to each member of the lubricating casing by a branch 59 and is provided at its upper end with a reservoir 60 for lubricant and which is here shown as provided with a force feed arrangement which admits of. hard lubricant being employed for the bearings of the shaft. Oil may, however, be employed as a lubricant, if preferred. It will be noted that the various members of the lubricating casing will be kept full of lubricant which will be supplied to the bearings at all times and automatically so that the pump can be driven at high speed and for a long period of time without danger of the bearings becoming dry and worn, and, moreover, lubricant may be supplied to the bearings from time to time and the pump kept in thoroughly lubricating condition indefinitely. A lubricating reservoir 61 is also provided which is connected by a pipe 62 to the cup 31 in which the ball bearing of the shaft is located.

The head 2 is formed with a. pair of curved discharge arms 63 with which the upper ends of the discharge pipes 10 are connected, the said discharge arms converging and being connected together by a union 64.

While I have herein shown and described a preferred embodiment of my invention, I would have it understood that changes may be made in the form, proportion and construction of the several parts without de parting from the spirit of my invention and within the scope of the appended claims.

I claim 1. A circular casing having a bottom provided with' a central intake opening and also having a wall provided with a central contracted portion so that chambers are formed in the, lower and upper portions of said casing and a central passageis formed between said chambers, spaced centrifugal pistons arranged one in each of said cham bers, and a cap on the casing, having eccentrically located outlets and also having a flange spaced from the lower side thereof, arranged in the upper chamber, bearing on 2 said upper centrifugal piston and provided with vanes to deflect water into said outlets.

2. In a centrifugal pump, a centrifugal piston open on opposite sides, a casing for said piston presenting a wall opposed to one open side of the piston, and a cap on the cas- JAMES P. NICHOLAS.

Witnesses:

A. R. BOHON, -.L. E. WILSON. 

